html{
	overflow-x: hidden;
}
.header_wrap{
	background-color: cadetblue;
	width: 100%;
	height: 92px;
	top: 0;
	left: 0;
	box-shadow: 3px 5px 2px #888888;
	padding-top: 15px;
	text-align: center;
	position: absolute;
	z-index: 222;
	opacity: 0.75;
}

nav{
	width: 80%;
	margin:auto;
	margin-top: 15px;
	bottom: 0px;
	
}

nav span{
    margin-left: 11%;
	min-width: 320px;
	margin: 0 5%;
	}
@font-face {
  font-family: 'webfont';
  font-display: swap;
  src: url('//at.alicdn.com/t/webfont_5bceag3d1lp.eot'); /* IE9*/
  src: url('//at.alicdn.com/t/webfont_5bceag3d1lp.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
  url('//at.alicdn.com/t/webfont_5bceag3d1lp.woff2') format('woff2'),
  url('//at.alicdn.com/t/webfont_5bceag3d1lp.woff') format('woff'), /* chrome、firefox */
  url('//at.alicdn.com/t/webfont_5bceag3d1lp.ttf') format('truetype'), /* chrome、firefox、opera、Safari, Android, iOS 4.2+*/
  url('//at.alicdn.com/t/webfont_5bceag3d1lp.svg#站酷小薇体') format('svg'); /* iOS 4.1- */
}
.web-font2 {
    font-family: "webfont" !important;
	font-size: 1.5em;
    font-style: normal;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
	
nav span:hover{
	background-color: lightgrey;
}

.cover {
    text-align: center;
    margin-top: 150px

}
.cover:hover{
	box-shadow: 0px 0px 2px #888888;
}

img{
	max-width: 100%;
}